Kaku: Japanese Notebook

Dittman Shum |

ASO score

Text

31/100

Reviews

0/100

Graphic

60/100

Other

0/100

App Rating

3.3

Votes

App Age

5y 6m

Last Update

Oct 26, 2025

iAP

$0.99 - 14.99

Compare with Category Top Apps

Metrics	Current App	Category Top Average	Difference
Rating	4	4.46	-10%
Number of Ratings (Voted)	4	736.3K	-100%
App Age	5y 6m	6y 4m	-13%
In-app Purchases Price	$50	$38	+32 %
Update Frequency	59d	37d	+60%
Title Length	23	25	-8%
Subtitle Length	27	28	-4%
Description Length	754	2 589	-71%
Number of Screenshots	936	1002	-7 %
Size	92MB	167MB	-45 %

Category Ranking in United States

Top	Dec 17, 2025	Dec 24, 2025
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Top	Dec 17, 2025	Dec 24, 2025
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Top	Dec 17, 2025	Dec 24, 2025
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Top	Dec 17, 2025	Dec 24, 2025
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Ranking Keywords in United States

Keywords	App Rank
учить японский с нуля	-1 12 -1

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Text ASO

Title (

Characters: 23 of 30

)

Kaku: Japanese Notebook

Subtitle (

Characters: 27 of 30

)

Translations & Conjugations

Description (

Characters: 754 of 4000

)

Kaku is an app for learning Japanese, perfect for beginner to intermediate learners. It helps with sentence structure by merging useful tools in one place: - A live feedback translator for sentences - Word lookup via Jisho.org for Japanese or English terms - Inline Translate (⌘ + I) feature for quick sentence translations - Conjugation tool for nouns, verbs, and adjectives - Shadow Reader gives audio and text highlighting - Synced sheets between iPhone and iPad for easy access - Word lists for various categories - Auto-translate clipboard feature for web text snippets - Reader Mode for better readability on large screens - Widgets offering a rotation of Japanese words and meanings Report bugs or suggestions to @kaku_app and follow for updates.}

Screenshots

Rating & Reviews

Reviews Overview

🧐 Coming Soon…

Rating

3.3

5 voters

Some Latest Reviews

rxn👽

29 Sep, 2023

it crashes when i tap the settings (cog) button, any fix?

vcy90

05 May, 2021

monthly subscription to use premium features, and trial makes you pay after a certain time unless u cancel. Inconvenient to even access the features; woud not recommend you waste your time

Mel_AOtaku

27 Mar, 2021

I was needed exactly this! This app have a big variety of words, and a dictionary and translate acopled indo this. 私は研究を頑張る！

babysadist

25 Jan, 2021

This app definitely lessens the waste of paper! But I found I was focusing more on trying to get the translation correct instead of writing! Well-developed regardless!! The Word Bank widget seems right up my alley for an everyday review of words I tend to forget, so I’ll absolutely be trying this new feature!

Vanessa Slote

22 Jan, 2021

i've been using this app a lot during my language exchanges, and i have to say its quite the lifesaver!! the grammar tab is really helpful for when you don't know how to formulate something.

Leenuhhhh

12 Jan, 2021

Fancy design but that’s about all it has going for it. Ads are everywhere which I normally would be fine with but every useful feature of the app is paywalled. The paywall, of course, is also subscription base with the lifetime purchase being $25, a ridiculous value. I can’t even use the app to decide whether or not it’s worth $25, I get berated by a pop up telling me I need to spend $25 to even see what else is in the app. I honestly never leave reviews but this was so appalling I had to. I understand the app is in a niche market but there are other ways to monetize your app. EDIT: Received an email from developer stating that they could provide a code to test out the app for a limited time by checking out their Twitter. Upon looking at their Twitter, I see a post by them calling me an entitled scum, how I don’t deserve to use their app, and soliciting people to report my review. Not a great look. As you can’t even scroll down on some tabs of the app without being told to cough up some cash I’m not sure how the developer expects someone to buy their app without even being able to access 75% of it. I hope everyone that looks at this app sincerely reconsiders their choice and looks elsewhere.

kentaro_sweets

04 Jan, 2021

Handy for getting translations and Jisho dictionary searches on the go. Very clean and easy to use UI.

sweetsknight

30 Nov, 2020

I use this app on my iPad in my class all the time and really recommend upgrading to premium to access the text-to-speech, better translations/dictionary and reader mode. With so many language learning apps out there, this app is a hidden gem.

the_jackdalton

12 Nov, 2020

I have only recently started learning Japanese, but I have found Kaku to be essential in keeping myself immersed in the language everyday. The grammar examples have helped me to understand and work with various conjugations and special word forms. The selected words make Kaku easy to use in quick situations. A lot of love and care has gone into this app. If you have any inclinations in getting the app; do it! It is wonderful to use on a daily basis, and I know it will continue to help me in my language learning journey for a long time.

Other

Additional Information

Rating:	3.25
Voted:	5
App Store Link:
Website:
Email:	-
Privacy Policy:
Categories:	Utilities, Education
Size:	92MB
iAP:	0.99 - 14.99 $
App Age:	5 years 6 months
Release Date:	Jun 11, 2020
Last Update:	Oct 26, 2025
Version:	6.0

Version history

6.0

Oct 26, 2025

- New Liquid Glass app icon! - All sheets can be exported to a text file

5.91

Jan 28, 2025

Minor UI updates.

Kaku: Japanese Notebook

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Ranking Keywords in United States

Text ASO

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Some Latest Reviews

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